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Home   /   E&T program   /   Continuous Professional Development   /   Thermal hydraulics and safety - International school in nuclear engineering

Thermal hydraulics and safety - International school in nuclear engineering

1.1.1 Réacteurs nucléaires

Computation codes

Modelisation

Pressurized water reactors (PWR)

Thermal hydraulics

4.5
Recommandation: 97 %
Average participant satisfaction score
Percentage of recommendations
©CEA

In summary

The ISNE international training course aims at promoting knowledge in the field of nuclear sciences. This module breaks down into two distinct parts: the "Thermal hydraulics of light water reactors (LWR)",
and "Modelling and multi-phase phenomenology of severe accidents in LWRs ".

For ENEN2+ admissible candidates, a 10% discount on the registration fees can be considered. For more information, please check:

  • https://database.enen.eu/index.php/2023/10/16/international-school-in-nuclear-engineering-instn-cea/
  • https://mobility.enen.eu/

Who should take this course ?

The doctoral course is designed for young researchers, PhD students, post-doctorates and engineers from nuclear industry companies, research centres, Universities, Technical Safety Organizations (TSO), regulatory bodies.

Learning outcomes

  • Describe the various scales of two-phase flow modelling and their significance.
  • Present the different formulations of the 1D two-phase flow modelling (number and nature of balance equations, set of dependent variables, closure laws).
  • Give practical and relevant examples of thermal hydraulics models in the nuclear field.
  • Identify and to discuss the major physical phenomena involved during design basis accident and severe accidents.
  • Describe the different scenarios of core degradation and corium interactions during severe accidents.
  • Present the hydrogen risk in LWRs.
  • International School 2025 leaflet
  • Technical visit organized (if possible, depending on the availability of the experimental facilities)
  • On-field experience, case study and tutorials
  • Lectures taught by international experts, including Dominique BESTION, Etienne STUDER and Florian FICHOT.

Full biography of our experts is available inside the School brochure (please check the "LEARNING OUTCOMES" section).

- Basic phenomena in single- and two-phase flow.
- Thermal hydraulics phenomena in LWRs.
- Multi-scale approach of LWR thermal hydraulics.
- System code modelling of reactor thermal hydraulics including advanced modelling.
- Simulation of LWR design basis accidents.
- Application of two-phase CFD to some reactor thermal hydraulics issues.
- Multiphase phenomena and modelling of severe accidents in LWRs.
- Hydrogen risk.
Minimum background: Master of Science in Nuclear Engineering.

Teaching method and tools

On-site visit

Collaboration

  • Logo CEA original

Contact(s)

INSTN Saclay

Course organiser :

Irfana GUELAH
instn-ues-sac-af@cea.fr

Program contact :

Poya SHIROWJAN
poya.shirowjan@cea.fr
+33 1 69 08 32 91

training sessions

Group limited to 24 trainees$
*Maybe exceeded in case of high registration demand

If you are disabled, please contact the disability correspondent at the following address: instn-handicap@cea.fr

No training session is scheduled for the moment, if this training interests you, please contact us.

From 2026 february 02
To 2026 february 06 INSTN Saclay 2,680.00€ excl. taxes REGISTER

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